CN112704832A - Battery box and battery package - Google Patents
Battery box and battery package Download PDFInfo
- Publication number
- CN112704832A CN112704832A CN202011598046.XA CN202011598046A CN112704832A CN 112704832 A CN112704832 A CN 112704832A CN 202011598046 A CN202011598046 A CN 202011598046A CN 112704832 A CN112704832 A CN 112704832A
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- Prior art keywords
- fire
- fire extinguishing
- battery
- cooling
- box
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/005—Delivery of fire-extinguishing material using nozzles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The application discloses battery box and battery package, the battery box includes: the side wall of the shell is provided with a fire extinguishing channel and a fire discharging port communicated with the fire extinguishing channel; the fire extinguishing box is arranged at the fire discharging port, and a fire extinguishing cavity communicated with the fire discharging port is formed in the fire extinguishing box; a spray system for selectively spraying a cooling liquid toward the fire suppression chamber. The utility model provides a battery box can realize the directional discharge of thermal runaway gas stream of fire, guarantees the system pressure balance in the battery box, and through set up spraying system in the box of putting out a fire, can be towards the intracavity spray cooling liquid that puts out a fire to make cooling liquid and thermal runaway gas stream of fire contact, thereby realize the cooling and the cooling to thermal runaway gas stream of fire, the time of extension naked light blowout battery package improves the security of battery package.
Description
Technical Field
The application relates to the technical field of battery manufacturing, in particular to a battery box body and a battery pack with the same.
Background
With the rapid development of new energy vehicles, the battery pack is used as a core part of the new energy vehicle, and the safety of the new energy vehicle after thermal runaway becomes an engineering problem which needs to be solved urgently. When a battery core in the battery pack is out of control due to heat, the air pressure in the battery pack can be increased sharply, flame or hot airflow can be sprayed to the outside without being sprayed, high-temperature flame is sprayed to the outside of the battery pack, the battery pack is exposed to naked flame, the related national standard requirements cannot be met, even the safety of personnel can be threatened, and an improved space exists.
Disclosure of Invention
The present application is directed to solving at least one of the problems in the prior art. Therefore, an object of the present application is to provide a battery box, which can realize directional dredging of thermal runaway gas and fire flow in a battery pack, and can spray flames in the thermal runaway gas and fire flow to reduce the temperature of the thermal runaway gas and fire flow.
According to this application embodiment's battery box includes: the side wall of the shell is provided with a fire extinguishing channel and a fire discharging port communicated with the fire extinguishing channel; the fire extinguishing box is arranged at the fire discharging port, and a fire extinguishing cavity communicated with the fire discharging port is formed in the fire extinguishing box; a spray system for selectively spraying a cooling liquid toward the fire suppression chamber.
According to the battery box of this application embodiment, can realize the directional discharge of thermal runaway gas stream, guarantee the system pressure balance in the battery box, and through set up spraying system in the box of putting out a fire, can be towards the intracavity spray cooling liquid that puts out a fire to make cooling liquid and thermal runaway gas stream contact, thereby realize cooling and cooling to thermal runaway gas stream, the time of extension naked light blowout battery package, improve the security of battery package.
According to some embodiments of this application, the sprinkler system includes shower nozzle, temperature element and controller, the shower nozzle with temperature element all installs in put out a fire the intracavity, just the controller is used for according to temperature element's testing result is right the coolant liquid circulation state of shower nozzle department controls.
The battery case according to some embodiments of the present application, further includes: the driving device is installed in the shell, the spray head is connected with the liquid cooling system, and the controller is used for controlling the driving device to drive cooling liquid in the liquid cooling system to flow to the spray head.
According to some embodiments of the application, the liquid cooling system is installed in the casing and is used for cooling the battery module installed in the casing.
According to some embodiments of this application's battery box, the liquid cooling system with through cooling line intercommunication between the shower nozzle, and be equipped with the check valve in the cooling line, the check valve structure is for following the liquid cooling system arrives the shower nozzle one-way switches on.
According to the battery box of some embodiments of this application, drive arrangement is including locating the driving motor of battery box, driving motor with locate the water pump electricity in the cooling line is connected.
The battery case according to some embodiments of the present application, further includes: the external pipe orifice is installed in the side wall, the first end of the external pipe orifice is communicated with the fire extinguishing channel, and the second end of the external pipe orifice is used for an external cooling water path.
According to the battery box of some embodiments of this application, the box of putting out a fire is including advancing burner and going out the burner, advance burner with go out the burner all with put out a fire chamber intercommunication, just advance burner with arrange the burner and meet, it will to go out the burner put out a fire chamber and outside intercommunication, advance burner with at least one department in going out the burner is equipped with temperature element.
According to some embodiments of the present application, the shower nozzle is a plurality of, a plurality of shower nozzles are arranged at intervals in the fire extinguishing chamber, and a plurality of shower nozzles are arranged to spray the cooling liquid toward the fire extinguishing chamber from different directions, respectively.
The application also provides a battery pack.
According to the battery pack of the embodiment of the present application, the battery case of any one of the above embodiments is provided.
Compared with the prior art, the advantages of the battery pack and the battery box are the same, and are not described in detail herein.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a battery pack according to an embodiment of the present application;
fig. 2 is a schematic structural view of a case of a battery pack according to an embodiment of the present application;
fig. 3 is a sectional view of a case of a battery pack of an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a spraying system of a battery pack according to an embodiment of the present disclosure;
fig. 5 is a plan view of a case and a battery module of the battery pack according to the embodiment of the present application.
Reference numerals:
a battery pack 100;
the fire extinguishing device comprises a shell 1, a fire extinguishing channel 11, a sub-channel 111, an air guide opening 12 and a fire extinguishing box 2;
the device comprises a spray head 31, a temperature measuring element 32, a controller 33, a driving device 34, a cooling pipeline 35, a one-way valve 36 and a liquid cooling system 37;
the battery module 4, the directional explosion venting port 41, the upper cover 5 and the mica plate 6.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
The battery box according to the embodiment of the present application is described below with reference to fig. 1 to 5, and the battery box is provided with a spraying system for cooling and cooling the heat loss control gas flow in the fire extinguishing box 2, so that the temperature of the heat loss control gas flow after being discharged from the fire extinguishing box 2 is low, and the heat loss control gas flow does not cause serious damage to the equipment or personnel outside the battery pack 100, which is beneficial to improving the use safety of the battery pack 100.
As shown in fig. 1 to 5, a battery case according to an embodiment of the present application includes: a housing 1, a fire extinguishing box 2 and a spraying system.
As shown in fig. 1 and 2, the housing 1 has a mounting cavity for mounting the battery module 4, as shown in fig. 3, a fire extinguishing passage 11 communicating with the mounting cavity is provided in a side wall of the housing 1, and as shown in fig. 3 and 4, a fire discharging port is further provided in the side wall of the housing 1.
Wherein, it should be noted that, as shown in fig. 1, two sets of battery modules 4 can be installed in the installation cavity, the two sets of battery modules 4 are respectively installed at two sides of the casing 1, and fire extinguishing channels 11 are respectively installed at two side walls of the casing 1, and two fire extinguishing boxes 2 are installed at the end portion of the casing 1, the two fire extinguishing channels 11 are spaced apart and respectively communicated with the two fire extinguishing boxes 2, as shown in fig. 1, the side walls are further provided with air guide ports 12 facing the directional explosion discharge ports 41 of the battery modules 4, the air guide ports 12 are used for communicating the fire extinguishing channels 11 with the installation cavity, the air guide ports 12 of the two fire extinguishing channels 11 are respectively facing the directional explosion discharge ports 41 of the two sets of battery modules 4, so that the thermal runaway gas flow generated by the two sets of battery modules 4 can respectively enter the corresponding fire extinguishing boxes 2 through the two fire extinguishing channels 11, the thermal runaway gas flow discharge effect is realized, and the end of the fire extinguishing channel 11 departing from the fire extinguishing boxes, to avoid cross-flow between the two fire extinguishing passages 11. As shown in fig. 1, the battery pack 100 further includes an upper cover 5 and a mica board 6, the upper cover 5 is adapted to be mounted at the upper end of the case 1 to close the mounting cavity, and the mica board 6 is located between the upper cover 5 and the battery module 4.
That is to say, battery module 4 can enter into the passageway of putting out a fire 11 after the heat of high temperature loss accuse gas stream that produces in the installation cavity, and the in-process temperature that flows in the passageway of putting out a fire 11 reduces gradually, flows to the box 2 of putting out a fire of casing 1 tip at last in to make the heat after the certain degree cooling lose accuse gas stream enter into the box 2 of putting out a fire and realize cooling and put out a fire and handle, effectively avoid discharging outside gas and take flame to initiate the secondary combustion problem. The casing 1 may be made of an aluminum alloy profile, and as shown in fig. 3, a partition rib is provided in the fire extinguishing passage 11, and the fire extinguishing passage 11 is partitioned into a plurality of sub-passages 111 spaced apart in the up-down direction by the partition rib.
As shown in figure 1, the box 2 of putting out a fire is installed in row burner department, and the box 2 of putting out a fire has the chamber of putting out a fire with row burner intercommunication, and the chamber of putting out a fire will put out a fire box 2 advance burner and go out burner intercommunication, need explain, put out a fire box 2 advance burner and row burner intercommunication, like this, the thermal runaway air current accessible in the passageway of putting out a fire is discharged and is entered into the intracavity of putting out a fire by advancing burner, outside the box 2 of putting out a fire is discharged by a burner after the intracavity cooling and put out a fire. Wherein, can be equipped with the explosion-proof valve in the fire outlet department of box 2 of putting out a fire, the explosion-proof valve can be opened when the atmospheric pressure of box 2 of putting out a fire and putting out a fire passageway 11, installation intracavity is too big, plays the effect of in time arranging and exploding to guarantee that the system internal pressure in the battery box is in balanced state.
Wherein, spray system is used for selectively spraying the coolant liquid towards the intracavity of putting out a fire, that is to say, when thermal runaway gas fire flows through the intracavity of putting out a fire, accessible spray system sprays the coolant liquid towards the intracavity of putting out a fire to make coolant liquid and thermal runaway gas fire contact, thereby realize cooling and cooling to thermal runaway gas fire.
Wherein, the open mode of spraying system can be controlled according to the temperature in the chamber of putting out a fire, if when the heat loss control gas stream temperature in the chamber of putting out a fire was too high and when surpassing preset temperature value, control spraying system and open to make spraying system spray the coolant liquid towards the intracavity of putting out a fire, thereby make the temperature that heat loss control gas stream flows reduce to below the preset temperature value, like this, reduce the flame or the high pressure draught's of the gas stream that enters into the box 2 of putting out a fire effectively temperature, delay the final blowout time outside battery package 100 of flame, give the interior personnel more time of fleing of car, improve the thermal runaway security of whole car. And when the temperature of the heat loss control gas flow in the fire extinguishing cavity is lower and lower than the preset temperature value, the gas flow in the fire extinguishing box 2 flows out and then cannot cause damage to external personnel, and the spraying system is controlled to be in a closed state, so that the power consumption of the spraying system is reduced, and the use cost of the spraying system is reduced.
According to the battery box of this application embodiment, can realize the directional discharge of thermal runaway gas stream of fires, guarantee the system pressure balance in the battery box, and through set up spray system in box 2 putting out a fire, can be towards the intracavity spray cooling liquid that puts out a fire to make cooling liquid and thermal runaway gas stream of fires contact, thereby realize cooling and cooling to thermal runaway gas stream of fires, the time of extension naked light blowout battery package 100 improves battery package 100's security.
In some embodiments, as shown in fig. 4, the sprinkler system comprises a sprinkler head 31, a temperature measuring element 32 and a controller 33, wherein the sprinkler head 31 and the temperature measuring element 32 are both installed in the fire extinguishing chamber, and the controller 33 is used for controlling the operation state of the sprinkler head 31 according to the detection result of the temperature measuring element 32.
As shown in fig. 4, the temperature measuring element 32 is installed in the fire extinguishing chamber to detect the temperature of the thermal runaway gas and fire flow in the fire extinguishing chamber, so as to determine whether the thermal runaway gas and fire flow meets the condition of starting the spraying system, the nozzle 31 is installed in the fire extinguishing chamber, and the nozzle 31 is used for spraying the cooling liquid towards the fire extinguishing chamber.
Controller 33 is connected with temperature element 32 electricity, and temperature element 32 can give controller 33 with the temperature signal transmission that detects after detecting the temperature of putting out a fire the intracavity, and controller 33 judges and the analysis temperature signal, and controls the running state of shower nozzle 31 based on control logic to when detecting the temperature of putting out a fire the intracavity high, control shower nozzle 31 sprays towards putting out a fire the intracavity, realizes the cooling effect to thermal runaway gas fire flow, reduces the temperature of high-pressure gas and flame. The temperature sensing element 32 may be a temperature sensor.
It should be noted that the controller 33 may be integrated with the battery pack controller to quickly respond to the thermal runaway of the battery pack 100, and a separate control device is not required, which is beneficial to reduce the cost.
In some embodiments, as shown in fig. 4, the spraying system further includes a driving device 34, the driving device 34 is installed in the housing 1, the spray head 31 is connected to the liquid cooling system 37, and the controller 33 is configured to control the driving device 34 to drive the cooling liquid in the liquid cooling system 37 to flow to the spray head 31. That is, the controller 33 can control the flow state of the cooling liquid between the liquid cooling system 37 and the spray head 31 by the driving device 34, thereby achieving the cooling and temperature lowering effects on the thermal runaway gas stream.
In some embodiments, the liquid cooling system 37 is installed in the housing 1, and the liquid cooling system 37 is used to cool the battery module installed in the housing 1, whereby the supply of the cooling liquid of the shower head 31 and the supply of the cooling liquid of the battery module can use the same water source, thereby eliminating the need for separately providing an additional water storage device, thereby reducing the installation cost.
The driving device 34 can be integrated in the casing 1 of the battery box body, so that the distance between the driving device 34 and the liquid cooling system 37 is short, the driving device 34 is favorable for rapidly driving the cooling liquid to flow towards the spray head 31 after receiving the control signal, the response efficiency of the driving device 34 is improved, and the spraying system is ensured to spray the cooling liquid in the fire extinguishing chamber in time.
In some embodiments, as shown in fig. 4, the liquid cooling system 37 communicates with the showerhead 31 through a cooling line 35 extending through the sidewall, and a check valve 36 is disposed in the cooling line 35, the check valve 36 configured for one-way communication from the liquid cooling system 37 to the showerhead 31.
In this way, by the arrangement of the check valve 36, the cooling liquid in the liquid cooling system 37 can flow to the spray head 31 in one direction through the cooling pipeline 35, and the cooling liquid is prevented from flowing back to the liquid cooling system 37 under the condition of ensuring effective cooling of the thermal runaway gas-fire flow. Meanwhile, after the thermal runaway gas and fire flow enters the fire extinguishing cavity, the air pressure in the fire extinguishing cavity is increased, the check valve 36 is arranged, the thermal runaway gas and fire flow can be prevented, the situation that the pipeline of the cooling system is excessively pressed due to the fact that the thermal runaway gas and fire flow enters the liquid cooling system 37 under the action of the air pressure is avoided, and therefore the spraying system can be guaranteed to be in a safe and stable running state.
The check valve 36 may be an electromagnetic check valve 36, and the check valve 36 is electrically connected to the controller 33, so that the controller 33 drives the check valve 36 to open or close.
In some embodiments, the driving device 34 includes a driving motor disposed in the battery box, the driving motor is electrically connected to a water pump disposed in the cooling pipeline 35, the controller 33 is electrically connected to the driving motor, so that the controller 33 can output a control signal to the driving motor, so that the driving motor can drive the water pump in the cooling pipeline 35, the cooling liquid in the liquid cooling system 37 is driven by the water pump to flow toward the spray head 31, and the driving motor can be powered by the battery module 4 without separately increasing a power source, which is beneficial to reducing the cost.
Alternatively, the driving device 34 may also include a pneumatic driving circuit connected to the cooling circuit 35 for providing driving pneumatic pressure to the cooling circuit 35, and may also realize driving of the cooling liquid.
In other embodiments, the battery pack further comprises: the external pipe orifice is installed on the side wall, the first end of the external pipe orifice is communicated with the fire extinguishing channel 11, and the second end of the external pipe orifice is used for an external cooling water path. That is to say, can also install external nozzle in this application at the lateral wall department to in introducing the cooling water in the external cooling water route to the passageway of putting out a fire 11 through external nozzle, directly cool off the gas fire flow in the passageway of putting out a fire 11.
From this, battery package in this application, when battery module 4 takes place the thermal runaway, the gas fire stream that battery module 4 produced is entering into fire extinguishing channel 11 in, can at first carry out primary cooling and cooling through the cooling water of external pipe mouth department, and after the gas fire stream enters into fire extinguishing box 2, coolant liquid in cooling system 37's the cooling plate flows to shower nozzle 31 through cooling line 35 under driving motor's effect, and enter into and carry out secondary cooling and put out a fire to the gas fire stream in fire extinguishing box 2, therefore, can greatly reduce the flame in the gas fire stream, delay the final blowout battery package 100 outer time of flame, give the interior personnel more time of fleing, improve the thermal runaway security of whole car.
In some embodiments, the fire extinguishing box 2 comprises a fire inlet and a fire outlet, the fire inlet and the fire outlet are both communicated with the fire extinguishing chamber, the fire inlet and the fire outlet are connected, the fire outlet is communicated with the fire extinguishing chamber and the outside, and at least one of the fire inlet and the fire outlet is provided with a temperature measuring element 32.
That is to say, the temperature measuring element 32 can be installed at the fire inlet, can also be installed at the fire outlet, or all install in the temperature measuring element 32 at fire inlet and fire outlet to realize the detection to the temperature in the fire extinguishing chamber, of course, also can select a plurality of temperature measuring elements 32, so that a plurality of temperature measuring elements 32 detect the temperature in the fire extinguishing chamber simultaneously, and the controller 33 comprehensively analyzes and judges according to the detection results of a plurality of temperature measuring elements 32, so as to acquire the actual temperature in the fire extinguishing chamber more accurately.
In some embodiments, the spray head 31 is plural, the plural spray heads 31 are arranged in the fire extinguishing chamber at intervals, and the plural spray heads 31 are configured to spray the cooling liquid toward the fire extinguishing chamber from different directions, respectively. If a plurality of shower nozzles 31 respectively fixed mounting in a plurality of lateral walls in chamber of putting out a fire, specifically, can all set up shower nozzle 31 at the last lateral wall in chamber of putting out a fire, lower lateral wall and circumference lateral wall to increase the cooling effect to the thermal runaway gas flame, reduce the temperature of the flame or the high-pressure draught that enter into in the box 2 of putting out a fire effectively, delay the final blowout time of flame outside battery package 100, give the interior personnel more time of fleing for in the car, improve the thermal runaway security of whole car.
The present application also provides a battery pack 100.
According to battery package 100 of this application embodiment, be provided with the battery box of any kind of above-mentioned embodiment, can realize the directional discharge of thermal runaway gas fire flow, guarantee the system pressure balance in the battery box, and through set up spray system in box 2 putting out a fire, can be towards the intracavity spray coolant liquid that puts out a fire to make coolant liquid and thermal runaway gas fire flow contact, thereby realize cooling and cooling to thermal runaway gas fire flow, the time of extension naked light blowout battery package 100, improve battery package 100's security.
It should be noted that, a blocking structure is provided at one end of the side wall of the casing 1 away from the fire extinguishing box 2 to separate the fire extinguishing passages on both sides of the casing 1, as shown in fig. 5, blocking structures are provided at a left position (e.g. k1) and a right position (e.g. k2) of the end of the side wall of the casing 1 away from the fire extinguishing box 2 to separate the fire extinguishing passages 11 on both sides, so as to avoid the streaming of the gas and fire on both sides of the battery box.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.
In the description of the present application, "the first feature" and "the second feature" may include one or more of the features.
In the description of the present application, "a plurality" means two or more.
In the description of the present application, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact not directly but via another feature therebetween.
In the description of the present application, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A battery case, comprising:
the fire extinguishing device comprises a shell (1), wherein a fire extinguishing channel (11) is arranged in the side wall of the shell (1), and a fire discharging port communicated with the fire extinguishing channel (11) is further formed in the side wall of the shell (1);
the fire extinguishing box (2) is mounted at the fire discharging port, and a fire extinguishing cavity communicated with the fire discharging port is formed in the fire extinguishing box (2);
a spray system for selectively spraying a cooling liquid toward the fire suppression chamber.
2. The battery box body as claimed in claim 1, wherein the spraying system comprises a spray head (31), a temperature measuring element (32) and a controller (33), the spray head (31) and the temperature measuring element (32) are both installed in the fire extinguishing chamber, and the controller (33) is used for controlling the circulation state of the cooling liquid at the spray head (31) according to the detection result of the temperature measuring element (32).
3. The battery box of claim 2, further comprising: drive arrangement (34), drive arrangement (34) install in casing (1), shower nozzle (31) link to each other with liquid cooling system (37), just controller (33) are used for controlling drive arrangement (34) drive the coolant liquid flow in the liquid cooling system (37) flows to shower nozzle (31).
4. The battery box according to claim 3, characterized in that the liquid cooling system (37) is installed in the housing (1) and is used for cooling the battery modules (4) installed in the housing (1).
5. The battery box according to claim 3, characterized in that the liquid cooling system (37) is in communication with the spray head (31) through a cooling line (35), and a check valve (36) is provided in the cooling line (35), the check valve (36) being configured for one-way communication from the liquid cooling system (37) to the spray head (31).
6. The battery box according to claim 5, characterized in that the driving device (34) comprises a driving motor provided in the battery box, the driving motor being electrically connected to a water pump provided in the cooling line (35).
7. The battery box of claim 2, further comprising: the external pipe orifice is installed on the side wall, the first end of the external pipe orifice is communicated with the fire extinguishing channel (11), and the second end of the external pipe orifice is used for an external cooling water path.
8. The battery box body according to any one of claims 2-7, wherein the fire extinguishing box (2) comprises a fire inlet and a fire outlet, the fire inlet and the fire outlet are both communicated with the fire extinguishing chamber, the fire inlet and the fire outlet are connected, the fire outlet is communicated with the fire extinguishing chamber and the outside, and the temperature measuring element (32) is arranged at least one of the fire inlet and the fire outlet.
9. The battery box according to any one of claims 2-7, characterized in that the spray head (31) is plural, the plural spray heads (31) are arranged at intervals in the fire extinguishing chamber, and the plural spray heads (31) are arranged to spray the cooling liquid toward the fire extinguishing chamber from different directions, respectively.
10. A battery pack (100), characterized in that a battery case according to any one of claims 1 to 9 is provided.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598046.XA CN112704832A (en) | 2020-12-29 | 2020-12-29 | Battery box and battery package |
| PCT/CN2021/137547 WO2022143132A1 (en) | 2020-12-29 | 2021-12-13 | Battery box body and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598046.XA CN112704832A (en) | 2020-12-29 | 2020-12-29 | Battery box and battery package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112704832A true CN112704832A (en) | 2021-04-27 |
Family
ID=75546497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011598046.XA Pending CN112704832A (en) | 2020-12-29 | 2020-12-29 | Battery box and battery package |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112704832A (en) |
| WO (1) | WO2022143132A1 (en) |
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| WO2022143132A1 (en) * | 2020-12-29 | 2022-07-07 | 长城汽车股份有限公司 | Battery box body and battery pack |
| CN115332656A (en) * | 2022-08-23 | 2022-11-11 | 华为数字能源技术有限公司 | Battery box, battery module, energy storage system and electric automobile |
| WO2023207866A1 (en) * | 2022-04-26 | 2023-11-02 | 宁德时代新能源科技股份有限公司 | Battery and electric apparatus |
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| WO2022143132A1 (en) | 2022-07-07 |
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